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Magpul® MS1 MS4 Adapter

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The MS1 MS4 Adapter. For single-point conversions that fit.

The MS1 MS4 Adapter utilizes a uniquely curved strap attachment that provides an easy two to one-point conversion for your existing Multi Mission Sling. Unlike other adapters, this unit reduces strap twist and provides a more natural fit thanks to that curved plate. In tandem with left- and right-side QD studs for the sling, and a QD attachment for your rifle.

Small, tough, lightweight.

This is the way. Magpul keeps things stupid simple with case-hardened steel fasteners, reinforced stitching, and high-quality QD balls and sockets. That's it. No bells and whistles. That is, no rattly flash that just adds noise and weight.

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Shipping of various parts and/or accessories are prohibited to states and locales (ie New Jersey, California, New York, etc…) with restrictions against certain parts and/or accessories or "assault weapons" (i.e. states with high-capacity magazine restrictions, manufacturing of semi-automatic weapons, etc..). It is your responsibility to be aware of your local firearms laws before purchasing from our website or machining a firearm. We try our best to keep our shipping page current, but laws change daily. only ships within the United States. Federal legislation dictates we cannot ship our products internationally.


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We are a national retailer of individual components and not all products depicted on this website are legal in every state. Shipping of various products found on this website are prohibited to some states (such as California, Connecticut, District of Columbia, Hawaii, New Jersey, New York, Rhode Island, and Washington). The information, pictures, text or products presented on this website are not a representation by us, and should not be understood by you, that any product or completed firearm is legal to assemble or own in your state of residence. We encourage each and every builder to perform their own research about the state and federal laws that apply to them. It is your responsibility to understand the law and we encourage you to consult with an attorney or your local ATF representative.